Record envelope, standing records and threshold days for Fort Smith A (CA002202200), Northwest Territories, Canada, with 84 years of record.
Key Facts for Fort Smith A
Fort Smith A (CA002202200) is a weather station in Northwest Territories, Canada at 60.02 latitude and -111.97 longitude, 205 m (673 ft) above sea level.
The station reports from 1942 to 2025, 84 years of record.
1,464 records set at Fort Smith A still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Fort Smith A set a daily record low maximum temperature of -33.0 C (-27.4 F) on 14 December 1983.
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Fort Smith A. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Fort Smith A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
8.2 C (46.8 F)
-49.4 C (-56.9 F)
n/a
n/a
Feb
11.7 C (53.1 F)
-53.9 C (-65.0 F)
n/a
n/a
Mar
13.9 C (57.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-40.6 C (-41.1 F)
n/a
n/a
May
31.7 C (89.1 F)
-19.4 C (-2.9 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-6.1 C (21.0 F)
n/a
n/a
Jul
34.4 C (93.9 F)
-3.3 C (26.1 F)
n/a
n/a
Aug
35.3 C (95.5 F)
-5.6 C (21.9 F)
n/a
n/a
Sep
31.7 C (89.1 F)
-12.8 C (9.0 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Nov
13.3 C (55.9 F)
-40.6 C (-41.1 F)
n/a
n/a
Dec
8.9 C (48.0 F)
-48.3 C (-54.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Fort Smith A still stand. 1981 holds the most, with 62.
Standing records at Fort Smith A by the year they were set
Year set
Standing records
1943
20
1944
37
1945
44
1946
38
1947
42
1948
41
1949
37
1950
42
1951
59
1952
43
1953
48
1954
59
1955
57
1956
37
1957
24
1958
34
1959
35
1960
20
1961
52
1962
22
1963
31
1964
29
1965
36
1966
49
1967
30
1968
33
1969
37
1970
19
1971
25
1972
30
1973
27
1974
23
1975
40
1976
14
1977
38
1978
20
1979
34
1980
35
1981
62
1982
27
1983
34
All-Time Record Progression
1 new records
1 all-time records were set at Fort Smith A between 9 August 1981 and 9 August 1981. Each dot is a new record.
When Fort Smith A set new all-time records
Date
Kind
Detail
1981-08-09
Record high maximum temperature
Record high maximum temperature 35.3 C (95.5 F)
Wettest Day of Each Month
Jul: 66.5 mm (2.6 in)
The wettest day on record for each calendar month at Fort Smith A. The most was 66.5 mm (2.6 in) on 2 July 1962.
Record daily precipitation for each month at Fort Smith A
Month
Record daily precipitation (mm)
Date
Jan
20.1 mm (0.8 in)
15 January 1944
Feb
13.2 mm (0.5 in)
9 February 1951
Mar
21.3 mm (0.8 in)
6 March 1968
Apr
19.3 mm (0.8 in)
4 April 1973
May
26.4 mm (1.0 in)
9 May 1964
Jun
66.2 mm (2.6 in)
9 June 1977
Jul
66.5 mm (2.6 in)
2 July 1962
Aug
47.5 mm (1.9 in)
23 August 1975
Sep
33.5 mm (1.3 in)
10 September 1982
Oct
20.8 mm (0.8 in)
12 October 1956
Nov
23.4 mm (0.9 in)
30 November 1953
Dec
13.2 mm (0.5 in)
12 December 1955
Period of Record Coverage
1943 to 1983
Complete yearUnder 90 percent of days
41 years of record at Fort Smith A, 1943 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1943, 1944.
Cooler than the station meanWarmer than the station mean
One stripe for each of 37 complete years at Fort Smith A, 1945 to 1983. Blue stripes are years cooler than the station's own mean of -3.3 C (26.1 F); red stripes are warmer. The coolest year was 1951, at -4.9 C (23.1 F), and the warmest was 1981, at -0.3 C (31.4 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Fort Smith A as warming stripes, 1945 to 1983
Year
Annual mean temperature
Difference from the station mean
1945
-3.8 C
-0.49 C
1946
-3.9 C
-0.56 C
1948
-3.3 C
-0.03 C
1949
-3.3 C
-0.02 C
1950
-4.8 C
-1.47 C
1951
-4.9 C
-1.64 C
1952
-2.2 C
+1.13 C
1953
-1.9 C
+1.38 C
1954
-3.3 C
-0.04 C
1955
-4.4 C
-1.11 C
1956
-3.8 C
-0.55 C
1957
-4.0 C
-0.72 C
1958
-2.1 C
+1.19 C
1959
-3.8 C
-0.48 C
1960
-3.1 C
+0.20 C
1961
-4.2 C
-0.95 C
1962
-3.7 C
-0.43 C
1963
-3.1 C
+0.24 C
1964
-3.8 C
-0.55 C
1965
-4.2 C
-0.87 C
1966
-4.8 C
-1.49 C
1967
-3.6 C
-0.30 C
1968
-3.4 C
-0.11 C
1969
-2.6 C
+0.70 C
1970
-3.0 C
+0.27 C
1971
-2.9 C
+0.42 C
1972
-4.8 C
-1.48 C
1973
-1.7 C
+1.58 C
1974
-3.6 C
-0.27 C
1975
-3.3 C
-0.05 C
1976
-2.4 C
+0.91 C
1977
-1.9 C
+1.38 C
1978
-2.8 C
+0.46 C
1980
-1.7 C
+1.62 C
1981
-0.3 C
+2.97 C
1982
-4.9 C
-1.63 C
1983
-2.6 C
+0.65 C
The annual mean temperature here has risen by 0.33 C (0.03 to 0.64) per decade over 1945 to 1983. In Fahrenheit: 0.6 F (0.1 to 1.2) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Fort Smith A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.33 C (0.03 to 0.64) per decade
0.6 F (0.1 to 1.2) per decade
1945 to 1983
37
Rise
Mean daily maximum
0.27 C (-0.03 to 0.57) per decade
0.49 F (-0.05 to 1.03) per decade
1945 to 1983
37
Not clearly different from zero
Mean daily minimum
0.4 C (0.1 to 0.7) per decade
0.7 F (0.1 to 1.3) per decade
1945 to 1983
37
Rise
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1942 to 1983
Yearly extremes at Fort Smith A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.3 C (95.5 F)
1981
31.4 C (88.5 F)
41
Coldest night (TNn)
-53.9 C (-65.0 F)
1947
-46.7 C (-52.1 F)
41
Wettest day (Rx1day)
66.5 mm (2.6 in)
1962
23.8 mm (0.9 in)
42
Wettest five days (Rx5day)
88.6 mm (3.5 in)
1962
36.3 mm (1.4 in)
42
Longest dry spell (CDD)
53 days
1983
27 days
42
Hottest day (TXx)
The hottest day of the year at Fort Smith A, 1942 to 1983. The record is 35.3 C (95.5 F) in 1981, marked on the chart; the median year is 31.4 C (88.5 F).
Hottest day (TXx) at Fort Smith A by year
Year
Hottest day (TXx)
1942
n/a
1943
25.0 C (77.0 F)
1944
32.2 C (90.0 F)
1945
34.4 C (93.9 F)
1946
31.1 C (88.0 F)
1947
31.7 C (89.1 F)
1948
31.1 C (88.0 F)
1949
30.0 C (86.0 F)
1950
33.9 C (93.0 F)
1951
31.7 C (89.1 F)
1952
28.9 C (84.0 F)
1953
33.9 C (93.0 F)
1954
28.9 C (84.0 F)
1955
33.3 C (91.9 F)
1956
28.9 C (84.0 F)
1957
27.8 C (82.0 F)
1958
31.1 C (88.0 F)
1959
32.8 C (91.0 F)
1960
31.7 C (89.1 F)
1961
33.3 C (91.9 F)
1962
28.3 C (82.9 F)
1963
31.7 C (89.1 F)
1964
32.2 C (90.0 F)
1965
29.4 C (84.9 F)
1966
29.4 C (84.9 F)
1967
32.8 C (91.0 F)
1968
27.8 C (82.0 F)
1969
30.0 C (86.0 F)
1970
35.0 C (95.0 F)
1971
31.7 C (89.1 F)
1972
31.7 C (89.1 F)
1973
30.0 C (86.0 F)
1974
30.6 C (87.1 F)
1975
34.4 C (93.9 F)
1976
30.0 C (86.0 F)
1977
29.9 C (85.8 F)
1978
30.2 C (86.4 F)
1979
32.6 C (90.7 F)
1980
32.4 C (90.3 F)
1981
35.3 C (95.5 F)
1982
31.4 C (88.5 F)
1983
30.4 C (86.7 F)
Coldest night (TNn)
The coldest night of the year at Fort Smith A, 1942 to 1983. The record is -53.9 C (-65.0 F) in 1947, marked on the chart; the median year is -46.7 C (-52.1 F).
Coldest night (TNn) at Fort Smith A by year
Year
Coldest night (TNn)
1942
n/a
1943
-21.7 C (-7.1 F)
1944
-40.0 C (-40.0 F)
1945
-43.9 C (-47.0 F)
1946
-48.3 C (-54.9 F)
1947
-53.9 C (-65.0 F)
1948
-46.7 C (-52.1 F)
1949
-46.7 C (-52.1 F)
1950
-48.9 C (-56.0 F)
1951
-47.2 C (-53.0 F)
1952
-47.8 C (-54.0 F)
1953
-48.3 C (-54.9 F)
1954
-47.2 C (-53.0 F)
1955
-45.0 C (-49.0 F)
1956
-45.0 C (-49.0 F)
1957
-47.2 C (-53.0 F)
1958
-45.0 C (-49.0 F)
1959
-42.8 C (-45.0 F)
1960
-46.1 C (-51.0 F)
1961
-46.7 C (-52.1 F)
1962
-47.8 C (-54.0 F)
1963
-47.2 C (-53.0 F)
1964
-44.4 C (-47.9 F)
1965
-47.8 C (-54.0 F)
1966
-49.4 C (-56.9 F)
1967
-45.0 C (-49.0 F)
1968
-47.8 C (-54.0 F)
1969
-47.8 C (-54.0 F)
1970
-45.0 C (-49.0 F)
1971
-46.7 C (-52.1 F)
1972
-46.1 C (-51.0 F)
1973
-52.2 C (-62.0 F)
1974
-48.9 C (-56.0 F)
1975
-46.7 C (-52.1 F)
1976
-43.3 C (-45.9 F)
1977
-45.0 C (-49.0 F)
1978
-43.0 C (-45.4 F)
1979
-47.6 C (-53.7 F)
1980
-43.0 C (-45.4 F)
1981
-44.2 C (-47.6 F)
1982
-47.1 C (-52.8 F)
1983
-42.6 C (-44.7 F)
Wettest day (Rx1day)
The wettest day of the year at Fort Smith A, 1942 to 1983. The record is 66.5 mm (2.6 in) in 1962, marked on the chart; the median year is 23.8 mm (0.9 in).
Wettest day (Rx1day) at Fort Smith A by year
Year
Wettest day (Rx1day)
1942
20.1 mm (0.8 in)
1943
15.0 mm (0.6 in)
1944
20.1 mm (0.8 in)
1945
21.6 mm (0.9 in)
1946
13.7 mm (0.5 in)
1947
18.8 mm (0.7 in)
1948
19.3 mm (0.8 in)
1949
21.6 mm (0.9 in)
1950
22.6 mm (0.9 in)
1951
24.9 mm (1.0 in)
1952
11.9 mm (0.5 in)
1953
23.4 mm (0.9 in)
1954
31.0 mm (1.2 in)
1955
22.6 mm (0.9 in)
1956
28.7 mm (1.1 in)
1957
28.7 mm (1.1 in)
1958
18.3 mm (0.7 in)
1959
17.0 mm (0.7 in)
1960
25.7 mm (1.0 in)
1961
32.0 mm (1.3 in)
1962
66.5 mm (2.6 in)
1963
27.4 mm (1.1 in)
1964
26.4 mm (1.0 in)
1965
29.2 mm (1.1 in)
1966
24.1 mm (0.9 in)
1967
39.1 mm (1.5 in)
1968
21.3 mm (0.8 in)
1969
16.5 mm (0.6 in)
1970
31.8 mm (1.3 in)
1971
16.3 mm (0.6 in)
1972
38.6 mm (1.5 in)
1973
39.4 mm (1.6 in)
1974
32.3 mm (1.3 in)
1975
47.5 mm (1.9 in)
1976
18.8 mm (0.7 in)
1977
66.2 mm (2.6 in)
1978
37.8 mm (1.5 in)
1979
23.5 mm (0.9 in)
1980
22.2 mm (0.9 in)
1981
20.0 mm (0.8 in)
1982
33.5 mm (1.3 in)
1983
49.4 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Fort Smith A, 1942 to 1983. The record is 88.6 mm (3.5 in) in 1962, marked on the chart; the median year is 36.3 mm (1.4 in).
Wettest five days (Rx5day) at Fort Smith A by year
Year
Wettest five days (Rx5day)
1942
30.3 mm (1.2 in)
1943
19.4 mm (0.8 in)
1944
17.9 mm (0.7 in)
1945
35.1 mm (1.4 in)
1946
25.6 mm (1.0 in)
1947
45.0 mm (1.8 in)
1948
32.3 mm (1.3 in)
1949
26.9 mm (1.1 in)
1950
37.1 mm (1.5 in)
1951
49.5 mm (1.9 in)
1952
17.8 mm (0.7 in)
1953
38.6 mm (1.5 in)
1954
77.0 mm (3.0 in)
1955
42.7 mm (1.7 in)
1956
33.2 mm (1.3 in)
1957
58.9 mm (2.3 in)
1958
33.3 mm (1.3 in)
1959
32.7 mm (1.3 in)
1960
48.8 mm (1.9 in)
1961
47.0 mm (1.9 in)
1962
88.6 mm (3.5 in)
1963
38.1 mm (1.5 in)
1964
29.5 mm (1.2 in)
1965
32.3 mm (1.3 in)
1966
29.2 mm (1.1 in)
1967
39.4 mm (1.6 in)
1968
35.4 mm (1.4 in)
1969
26.7 mm (1.1 in)
1970
33.7 mm (1.3 in)
1971
17.2 mm (0.7 in)
1972
44.2 mm (1.7 in)
1973
88.6 mm (3.5 in)
1974
38.7 mm (1.5 in)
1975
62.8 mm (2.5 in)
1976
31.8 mm (1.3 in)
1977
83.3 mm (3.3 in)
1978
49.0 mm (1.9 in)
1979
24.7 mm (1.0 in)
1980
31.8 mm (1.3 in)
1981
46.4 mm (1.8 in)
1982
54.3 mm (2.1 in)
1983
76.2 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Fort Smith A, 1942 to 1983. The record is 53 days in 1983, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Fort Smith A by year
Year
Longest dry spell (CDD)
1942
5 days
1943
32 days
1944
44 days
1945
24 days
1946
28 days
1947
20 days
1948
24 days
1949
38 days
1950
44 days
1951
25 days
1952
22 days
1953
25 days
1954
35 days
1955
23 days
1956
19 days
1957
23 days
1958
20 days
1959
28 days
1960
33 days
1961
47 days
1962
34 days
1963
21 days
1964
34 days
1965
25 days
1966
17 days
1967
33 days
1968
26 days
1969
28 days
1970
16 days
1971
32 days
1972
26 days
1973
23 days
1974
25 days
1975
33 days
1976
32 days
1977
25 days
1978
36 days
1979
28 days
1980
28 days
1981
24 days
1982
27 days
1983
53 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
37 years with a frost
Across 37 years with a frost, the median last spring frost at Fort Smith A falls on 7 June and the median first autumn frost on 19 August, which leaves a median of 78 days between them.
Fitted over all years, the growing season changes by +7.6 days per decade at this station.
Frost dates and growing season at Fort Smith A
Measure
Median, all years
Earliest period
Recent period (1953 to 1983)
Recent against earliest
Fitted trend
Last spring frost
7 June
n/a
6 June
n/a
-4.9 days per decade
First autumn frost
19 August
n/a
19 August
n/a
+2.7 days per decade
Growing days
78 days
n/a
81 days
n/a
+7.6 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
39 years, 1945 to 1983
A day with at least 25.3 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 77.7 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Fort Smith A: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
25.3 mm (1.0 in)
5 years
35.5 mm (1.4 in)
10 years
43.6 mm (1.7 in)
25 years
55.6 mm (2.2 in)
50 years
66.0 mm (2.6 in)
Longer than the 39 years of record
100 years
77.7 mm (3.1 in)
Longer than the 39 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 39 years of values from 1945 to 1983.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 66.5 mm (2.6 in) in 1962; 66.2 mm (2.6 in) in 1977; 49.4 mm (1.9 in) in 1983.
Download the Data
Data for Fort Smith A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Fort Smith A threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.